Signal “0” error while scrolling a tableview with images

[roger_iphone]

Hi,

I have a problem while scrolling images on tableview.

I am getting a Signal "0" error.

I think it is due to some memory issues but I am not able to find out the exact error. The code is as follows,

- (UITableViewCell *)tableViewUITableView *)tableView cellForRowAtIndexPathNSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell";

UITableViewCell *cell = [travelSummeryPhotosTable dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];

}

//Photo ImageView
UIImageView *photoTag = [[UIImageView alloc] initWithFrame:CGRectMake(5.0, 5.0, 85.0, 85.0)];

NSString *rowPath =[[imagePathsDictionary valueForKey:[summaryTableViewDataArray objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];

photoTag.image = [UIImage imageWithContentsOfFile:rowPath];
[cell.contentView addSubviewhotoTag];

[photoTag release];

// Image Caption
UILabel *labelImageCaption = [[UILabel alloc] initWithFrame:CGRectMake(110.0, 15.0, 190.0, 50.0)];
labelImageCaption.textAlignment = UITextAlignmentLeft;
NSString *imageCaptionText =[ [imageCaptionsDictionary valueForKey:[summaryTableViewDataArray objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
labelImageCaption.text = imageCaptionText;
[cell.contentView addSubview:labelImageCaption];
[labelImageCaption release];

return cell;

}
Thanks in advance.

[smithdale87]

You're adding TONS of imageView's & UILabels to the cell. That's at least part of your problem. Only add the new subviews when you create a new cell, otherwise, just use the current ones

[roger_iphone]

Originally Posted by smithdale87

You're adding TONS of imageView's & UILabels to the cell. That's at least part of your problem. Only add the new subviews when you create a new cell, otherwise, just use the current ones

Thanks for quick reply !! I have updated the code. The application is not crashing but the scrolling of TableView is very very slow. I am loading images from documents directory at the run time. Is it the reason for slow scrolling? What is the standard way of storing images? Should I create a image array and access it? Does size of the images also affects the scrolling speed? Does memory leaks in other classes cause the slow scrolling?

[smithdale87]

Thanks for quick reply !! I have updated the code. The application is not crashing but the scrolling of TableView is very very slow. I am loading images from documents directory at the run time. Is it the reason for slow scrolling?

Yes somewhat. How large are the images?

What is the standard way of storing images? Should I create a image array and access it?

Keeping an array of images in memory could cause you to run out of memory if you have a lot of images.

Does size of the images also affects the scrolling speed?

Files size or image dimension? Both will have some affect.

Does memory leaks in other classes cause the slow scrolling?

Less memory = bad.